A district court denied motions for summary judgment on states' claims that an electric utility modified one of its coal-fired power plants in violation of the prevention of signnificant deterioration (PSD) permitting requirements set forth in Clean Air Act §165(a). The court held that the rout...

A district court held that the Clean Air Act (CAA) does not preempt a local air district rule that requires developers to reduce nitrogen oxide and particulate matter emissions from their projects or to pay a fee to offset such emissions. The rule is not a standard subject to CAA §209. It neith...

The Seventh Circuit upheld a lower court order enjoining a power company from building a coal-fired power plant without first obtaining a new prevention of significant deterioration (PSD) permit from the state of Illinois. The state's environmental agency granted the company a PSD permit in 2001. Th...

A district court dismissed a county's lawsuit against a railroad company for allowing its locomotive engines to idle in violation of state air pollution law. This case involves railcars, the fumes they emit, and the tracks they use. Accordingly, its falls under the umbrella of federal regulatory aut...

The Eighth Circuit upheld as moot a lower court decision denying a hunting club's motion to preliminarily enjoin a power company from constructing a 600-megawatt pulverized coal-fired power plant in Hempstead County, Arkansas, without first obtaining a prevention of significant deterioration permit ...

The D.C. Circuit denied an environmental group's petition for review of U.S. Environmental Protection Agency (EPA) air quality regulations governing the exclusion of emissions data from state reporting requirements during exceptional events such as natural disasters. The rule allows states to list s...

A district court held that environmental groups' citizen suit against the Tennessee Valley Authority (TVA) for violating the Clean Air Act, the Tennessee state implementation plan, and related regulations in conjunction with its operation of coal-fired power plant in Bull Run, Tennessee, must procee...

A district court entered judgment for the Tennessee Valley Authority (TVA) with respect to environmental groups’ claims that the TVA violated the CAA and the Tennessee SIP in its operation of a fossil fuel-fired electricity generating facility. The groups argued that two projects, the economiz...

The Ninth Circuit held that the U.S. Environmental Protection Agency (EPA) did not act arbitrarily, capriciously, or contrary to law when it granted Nevada's request to split one of its clean air areas into two. Contrary to an environmental group's claim, the presence and operation of a mine in the ...

The court remanded portions of a 2002 U.S. Environmental Protection Agency (EPA) rule interpreting when a major stationary source undertakes a "modification," thereby triggering the Clean Air Act's new source review (NSR) requirements. EPA erred in promulgating the clean unit applicability test, whi...